Corner-bead.



M. J. DONER.

CORNER BRAD. APPLICATION FILED 0019,1911.

1,015,381, 1 Patented Jan. 23, 1912.

v iunrrnn STATES PATENT OFFICE.

a. non-11a, or 'onroaso, ILLINOIS, AssisNoR or own-THIRD T0 CHARLES G.

rams carers-imp To cHnnLns F. Dr ves, BOTH OF GHIGAGO, ILLINOIS.

conunn nsan Specification of Letters Patent. Patented J an. 23, 1912.

Application filed October 9, 1911. Serial 110.65%7.

. o all whom it may concern: 7

Be it known that l, MARTIN J. Dorms, a citizen of the United States, residing in the city oi Ghicago, county of Cook, and State lllincis, have invented certain new and useful lmprovements in Corner'Beads, of which the following is a specification.

This 'nvention relates to improvements in come heads and refers more particularly to a me al corner head for holding or supporting the the walls of a building, and the like.

Among the salient objects of the invention are to provide a construction which obtains maximum etliciency in maintaining plastering or lathing in place at the corners of the walls and which at the same time will effectively resist a sudden blow or shock of considerable violence; to provide a construc-' tion in which the wings of the corner beads are so arranged that excessive pressure tends to further close or tighten the head of the bead instead of spreadingit apart at its joint as in the prior art devices; to provide a construction which dispenses with the necessity of any strengthening plate or rod; to provide a construction which may be readily applied to any thickness to lit any desired curve in the corner of a wall; to provide a construction which is particularly characterized-by its cheapncssin manufacture and which is nevertheless reliable and simple in construction; and in general. to provide an improved. device "of the character referred to.

Referring to the drawings' l igure 1 is a side elevation of my improved corner bead shown as applied to a wall, with parts 012 the plaster broken'away in order to show the construction of the bead. Fig. 2 is a horiziontal sectional View of the construction shown in Fig. 1. Fig. 3 is a fragmentary perspective View of the corner bead. Fig. 4:

is a horizontal sectional view of the construction shown in Fig. 3. Fig. 5 is a plan View of a sheet of metal showing the manner of cutting out corner beads.

' My. invention consists in the matters hereinafter described and more particularly pointed out in the appended claims.

In the drawings, 1 designates as a whole my improved corner bead, which is formed from a single piecelcf sheet metal bent along its central ormediuiii lines to form a tubular head 2, havingja tubular outer face? and plaster at the corners or angles of of plaster or bent sides 4 and 5. The sides 4: and -5 of the head are bent to form the joint 6. At the joint 6, each side of the head is provided with a plurality of spaced apart'and alternately disposed wings 7, each of the wings terminating in a tongue or eye.

The corner head is applied to the wall in the usual manner, nails being driven through the edges 8' into the lathing or wall, the plastering is then applied in the well known manner.

The corner beads may be of any desired length. The blanks from which these. beads are formed are preferably struck out in the manner shown in Fig. '5, e. 6., a blank is struck out as shown in full lines in Fig. 5 and the succeeding blank is struck out along the dotted lines as shown in Fig. 5,this manner of striking out the blank obviously reduces the cost of manufacture, as there is a minimum of waste. It is to be noted that.

the head ofthe bead may be so struck as to present a neat and finished appearance while at the same time is extremelystrong. Pressure on the head ofthcbead it is true has a tendency to spread the wings 'l' apart but instead. of this weakening or opening the bead along the joint it further closes the joint.

Difliculty hasbeen experienced in many of the prior art devices in preventing the head of the head from spreading under excessive shock. Applicants device is so constructed that excessive pressure rather strengthens than weakens the beadin so much as it closes instead of opens the joint. It will be 'further noted that the wings while formed from a. minimum amount of metal are nevertheless sui'ficiently strong for practical purposes.

I am aware that devices of this character have been patented numerous times but none of them combine the strength and elliciency of my device with extreme economy in manufacture, and it may be stated here that economy in manufacture is one of the prime requisites-in a device of this character.

The particular shape; of the wings or eyes may be moreor less varied in an obvious manner.

I do not limit myself to the details of construction shown except as set forth in the appended claims.

piece of sheet metal bent centrally to form a likewise over-lapping the closed hollow head, said head consisting of a tubular outer face and two sides meeting-to form a joint, a plurality of spaced apart skeleton wings extending from one side of the head and over-lapping the joint, and a plurality of spaced apart similar wings extending from the other side of the head and joint, the wings of one side being alternately disposed with the wings of the other side of the head, each of said wings terminating in an eye or tongue portion for attachment to the wall, said wings being so arranged that pressure on the head tends to close instead of open the joint.

2. A corner bead formed from a single piece of metal bent centrally to form a olnsed hollow head, the joint thereof being along the inner edge of the spaced apart wings extending from one side of the head and overlapping the joint, :1, second series of similarly arranged wings alternately disposed with reference to the members of the first series and extending from the other side of the head and over-lap ing the joint, said sets of wings being angu arly disposed relative to each other whereby the pressure on the outer side of the head tends to close the head at its joint.

. MARTIN J. Donne.

Vitnesses N ELLIE B. DnAnBoRN, J. M. LU'rz.

head, a plurality of 

